The following steps describe how to override the tax calculation from Tax Determination in a sales invoice in SAP.

1. Enter the appropriate value in the Company Code field.
   For example: 3000.
2. Enter the appropriate value in the Customer number field.
   For example: 300025.
3. Enter the current date as the invoice date.
4. Enter the appropriate amount in the Amount field.
5. Select O1 Tax from the dropdown.
6. Verify that the Calculate Tax checkbox is not selected.
7. Enter the appropriate amount in the Tax Amount field.
8. At the line item level, enter the appropriate value in the G/L acct column.
   For example: 809000.
9. Double-click in the Short Text field. Press Enter to dismiss any warnings.
10. Enter the appropriate value in the Amount in doc. curr. column.
11. Scroll to the right and enter the appropriate value in the Cost Center column.
12. Click Simulate.
    Dismiss any warnings.
13. Click the Taxes icon to verify the tax amount.
    The Tax items window will display.
14. Click the Check mark icon to close the Tax Items window.
15. Click Save to post the invoice.
    A new document number will be displayed at the bottom of your screen. Save it for your records.